<template>
  <div class="body1">
    <div class="no-print el-button-print">
      <el-button @click="exportPDF">导出为pdf</el-button>
      <el-button @click="openWhiteBoard">打开白板</el-button>
    </div>
    <div class="body2" id="pdfDom" :class="{ 'pdf-export': isPdfExport }">
      <div class="title">
        <div class="biaotididian">{{ agencyName }}</div>
        <div class="biaoti">现场勘验图</div>
      </div>
      <table class="tableStyle">
        <colgroup>
          <col width="55%">
          <col width="45%">
        </colgroup>
        <tr style="height: 550px;">
          <td colspan="2">
            <div style="display: flex; align-items: center; justify-content: center;  height: 450px;"
              @click="chooseImage">
              <img v-if="!isLoading && form.imageSrc" :src="form.imageSrc" alt="现场勘验图"
                style="max-height: 530px; max-width: 99%;">
              <input type="file" accept="image/*" style="display: none" ref="imageInput" @change="handleFileChange">
              <div v-if="!form.imageSrc || isLoading" class="placeholder-image"></div>
            </div>
          </td>
        </tr>
        <tr>
          <td colspan="2" style="height: 40px;">
            绘制内容:<input maxlength="27" class="areaInputStyle" style="text-align: left;width: 520px"
              v-model="form.textarea1" />
          </td>
        </tr>

        <tr>
          <td style="height: 40px;">
            绘制日期:
            <editable-textarea :text="form.date1" param-type="YYYY-MM-DD HH:mm1"
              @send-to-parent="receiveFromChild"></editable-textarea>
          </td>
          <td>制作人:<input maxlength="10" class="areaInputStyle" style="text-align: left; width: 190px;"
              v-model="form.textarea2" />
          </td>
        </tr>
        <tr>
          <td style="height: 50px;">
            <div style="display: flex; align-items: center; height: 50px;">
              <div style="width: 75px;">当事人:</div>
              <div style="width: 250px;">
                <privy-info-select-return-array v-model="form.unitName" :isTable="true" maxLength="26" return-fields="A"
                  :return-array-template="[
                    { name: 'companyAddress', field: 'E' },
                    { name: 'legalPersonPhone', field: 'H' },
                  ]" @select="selectUnitUpdateData">
                </privy-info-select-return-array>
              </div>
            </div>
          </td>
          <td style="width: 200px">
            日期:
            <editable-textarea :text="form.date2" param-type="YYYYMMDD2"
              @send-to-parent="receiveFromChild"></editable-textarea>
          </td>
        </tr>
        <tr>
          <td style="height: 40px;">
            <span style="width: 75px; display: inline-block; height: 25px;">见证人:</span>
            <input class="areaInputStyle" style="text-align: left;width: 250px;" maxlength="13"
              v-model="form.textarea4" />
          </td>
          <td>
            日期:
            <editable-textarea :text="form.date3" param-type="YYYYMMDD3"
              @send-to-parent="receiveFromChild"></editable-textarea>
          </td>
        </tr>
        <tr>
          <td style="height: 40px;">
            <span style="width: 75px; display: inline-block; height: 25px;">勘验人:</span>
            <input class="areaInputStyle" style="text-align: left; width: 250px;" v-model="form.textarea5"
              maxlength="13" />
          </td>
          <td>
            日期:
            <editable-textarea :text="form.date4" param-type="YYYYMMDD4"
              @send-to-parent="receiveFromChild"></editable-textarea>
          </td>
        </tr>
        <tr>
          <td style="height: 80px; display: flex; border: 0px; align-items: center; ">
            <div style="display: flex; align-items: center; height: 75px;">
              <div style="width: 100px;">当事人<br>联系地址：</div>
              <div style="width: 230px;">
                <el-input v-model="form.companyAddress" :resize="'none'" autosize class="areaInputStyle" type="textarea"
                  maxlength="36"></el-input>
              </div>
            </div>


          </td>
          <td>联系电话:<input class="areaInputStyle" type="text" style="width: 170px;" v-model="form.legalPersonPhone"
              oninput="this.value = this.value.replace(/[^a-zA-Z0-9_-]/g, '')" maxlength="18">
          </td>
        </tr>
      </table>
    </div>
  </div>
</template>

<script>
import axios from "axios";
import EditableTextarea from "@/views/template/EditableTextarea";
import { agencyName, sealName } from "../../utils/publicName.js"
import PrivyInfoSelectReturnArray from "@/views/template/PrivyInfoSelectReturnArray";
import InvestigatorSelect from "@/views/template/InvestigatorSelect";
import SignatureField from "@/views/template/SignatureField";

export default {
  components: {
    EditableTextarea,
    InvestigatorSelect,
    SignatureField,
    PrivyInfoSelectReturnArray,
  },
  data() {
    return {
      isLoading: false,
      resultImgurl: '',
      agencyName: agencyName,
      sealName: sealName,
      form: {
        imageSrc: "",
        phoneNumber: '',
      },
      isPdfExport: false, // 控制打印样式
    };
  },

  created() {
    window.parent.getTemplateData((data) => {
      this.form = data;
    })
    window.postForm = () => {
      this.postForm();
    }
  },
  mounted() {
    window.parent.changeTemplateDow();
  },
  methods: {
    // 导出为pdf
    exportPDF() {
      this.savePDF()
        .then((blob) => {
          const blobUrl = URL.createObjectURL(blob);

          // 先预览
          const previewWindow = window.open(blobUrl, '_blank');

          // 自动下载
          const fileName = `现场勘验图.pdf`;
          const downloadLink = document.createElement('a');
          downloadLink.href = blobUrl;
          downloadLink.download = fileName;
          document.body.appendChild(downloadLink);
          downloadLink.click();
          document.body.removeChild(downloadLink);

          // 监听预览窗口关闭后释放内存
          if (previewWindow) {
            const timer = setInterval(() => {
              if (previewWindow.closed) {
                clearInterval(timer);
                URL.revokeObjectURL(blobUrl);
              }
            }, 1000);
          } else {
            setTimeout(() => URL.revokeObjectURL(blobUrl), 10000); // 兜底释放
          }
        })
        .catch(error => {
          console.error('导出PDF出错:', error);
          alert('导出失败，请重试或联系管理员');
        });
    },
    savePDF() {
      this.isPdfExport = true; // 激活PDF样式
      return new Promise((resolve, reject) => {
        this.$nextTick(() => {
          import('html2pdf.js').then((module) => {
            const html2pdf = module.default;

            //获取所有需要替换的 el-input
            const elInputs = document.querySelectorAll('.el-input__inner, .el-textarea__inner');

            //存储原始元素和它们的父节点，方便后续恢复
            const originalElements = [];

            elInputs.forEach((input) => {
              const div = document.createElement('div');
              div.style.whiteSpace = 'pre-wrap'; // 保留换行
              div.style.fontFamily = '仿宋';
              div.style.fontSize = '5mm';
              div.textContent = input.value; // 保留原内容（自动处理 \n 换行）
              div.style.lineHeight = '1.3';

              // 替换 el-input，并存储原始元素
              originalElements.push({
                parent: input.parentNode,
                original: input,
                replacement: div,
              });
              input.parentNode.replaceChild(div, input);
            });

            // 配置选项
            const opt = {
              margin: 0,
              image: {
                type: 'jpeg',
                quality: 0.98
              },
              html2canvas: {
                scale: 2,
                logging: false,
                useCORS: true
              },
              jsPDF: {
                unit: 'mm',
                format: 'a4',
                orientation: 'portrait'
              }
            };

            const element = document.getElementById('pdfDom');

            // 生成PDF Blob对象
            html2pdf()
              .set(opt)
              .from(element)
              .toPdf()
              .get('pdf')
              .then((pdf) => {
                const blob = pdf.output('blob');

                resolve(blob); // 返回Blob对象
              })
              .catch((error) => {
                reject(error);
              })
              .finally(() => {
                this.isPdfExport = false; // 恢复原始样式
                // 恢复原始input
                originalElements.forEach(({ parent, original, replacement }) => {
                  parent.replaceChild(original, replacement);
                });
              });
          }).catch((error) => {
            reject(error);
            this.isPdfExport = false;
            originalElements.forEach(({ parent, original, replacement }) => {
              parent.replaceChild(original, replacement);
            });
          });
        });
      });
    },
    //父页面提交按钮将调用此方法，此方法将文书数据回传到父页面的请求方法中
    postForm() {
      this.savePDF()
        .then((blob) => {
          // 创建FormData并添加文件
          const formData = new FormData();
          formData.append('file', blob, '现场勘验图.pdf');

          window.parent.postTemplateDate(this.form, formData);
        })
        .catch(error => {
          console.error('整个保存PDF出错:', error);
        });
    },
    openWhiteBoard() {
      window.open("whiteBoard", '_blank')
    },
    //选择日期时间
    receiveFromChild(data, type) {
      const TypeMap = {
        'YYYY-MM-DD HH:mm1': 'date1',
        'YYYYMMDD2': 'date2',
        'YYYYMMDD3': 'date3',
        'YYYYMMDD4': 'date4',
      };
      if (TypeMap[type]) {
        this.form[TypeMap[type]] = data;
      }
    },

    chooseImage() {
      this.$refs.imageInput.click();
    },
    async handleFileChange(event) {
      // debugger;
      try {
        const file = event.target.files[0];
        const reader = new FileReader();
        reader.onload = () => {
          this.form.imageSrc = reader.result;
        };

        if (file) {

          this.isLoading = true;
          reader.readAsDataURL(file);
          setTimeout(() => {
            this.isLoading = false;
          }, 2000);

          const formData = new FormData();
          // 添加 file 属性，并指定文件名
          formData.append('file', file);

          // 设置 Content-Type 头部为 multipart/form-data
          const config = {
            headers: {
              'Content-Type': 'multipart/form-data'
            }
          };

          const response = await axios.post('/api/related-file/uploadSign', formData, config);
          const { code, data, message } = response.data;
          if (code === '200') {
            if (data && data.url) {
              this.resultImgurl = data.url;
              this.resultImgname = data.name;
            } else {
              throw new Error('图片上传失败，请重试！');
            }
          } else {
            throw new Error(message || '图片上传失败，请重试！');
          }
          const url = `api/file/download/${this.resultImgurl}`;
          this.form.imageSrc = url
        }
      } catch (err) {
        this.$emit('updateSignImg', '', this.signType);
      }
    },
    // 选择单位
    selectUnitUpdateData(data) {
      data.forEach(item => {
        this.form[item.name] = item.value;
      })
    },
  }
};
</script>

<style scoped>
:deep(.el-button-print .el-button) {
  display: inline-flex !important;
  visibility: visible !important;
  opacity: 1 !important;
  width: auto;
  min-width: 100px;
  height: auto;
  padding: 8px 15px;
  background: #fff !important;
  color: #000 !important;
  border: none;
}

:deep(.el-textarea__inner) {
  box-shadow: 0 0 0 0;
  color: black;
  padding: 0;
  font-family: "仿宋", serif;
  font-size: 5mm;
  overflow-y: hidden;
  line-height: 1.3;
}

:deep(.el-textarea-hidden .el-textarea__inner) {
  box-shadow: 0 0 0 0;
  color: black;
  padding: 0;
  font-family: "仿宋", serif;
  font-size: 5mm;
  overflow-y: hidden !important;
  resize: none !important;
  height: auto !important;
}

.input-container {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
}

.inputStyleNoLine {
  border: none;
  outline: none;
  padding: 0px;
}

.typeSpan {
  cursor: pointer;
  font-size: 5mm;
}
</style>
